Comminuting or grinding machine



E. CARNS COMMINUTING OR GRINDING MACHINE June 17 1924. 1,498,262

Filed Oct. 1. 1923 Patented June 17, 1924.

UNITED STATES PATENT OFFICE.

ELLIOTT oAaNs, or BOTON, MASSACHUSETTS.

COMMINUTING 6R GRINDING MACHINE.

Application filed ctober 1, 1923. Serial No. 666,01i.

To all whom it may concern:

Be it known that I, ELLIOTT CARNS,'2L.- citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Comminuting or Grinding Machines, of which the following is a specification.

The present invention relates to a comminuting or grinding machine primarily'for food products.

An important aim is to provide a novel, durable, inexpensive, quick-detachable and replaceable end ring construction for the cylinder or barrel which avoids cumbersomeness, unsightlin'ess or other features objectionable to the constant user and a construction which particularly dispenses with a.

screw threaded or othergrease and vermin collecting and retaining connection to the end that the parts are better adapted for and will encourage the user to more frequently clean the same in the aid of sanitation.

Another object is to provide a novel end ring, capable of but not necessarily being manufactured in a casting, having hook lugs to connect it to fastenings on the cylinder or barrel in such manner that the fastenings will be located inwardly of the outer stir-- face of the ring and the ring adjacent the fastenings will be constructed to facilitate manual engagement for application or re-' moval.

A further object is to provide an end ring generally of L-shapein cross section so as to have bearing on an external cylindrical portion of the barrel and a flange to overlap the discharge end of the barrel, with the annular wall having the hook lugs extending radially therefrom of less'thickness than the width of the wall, with the annular wall reduced opposite the lugs to afford fingerholds and reinforced by saidlugs at said portions.

A still further object is to'provide a construction of end ring in which theclamping pressure will be equal at all points of application and in which teats on the cylinder may cooperate with slots of the ring to guide the latter into place and also to supplement fastening bolts in securing the ring against longitudinal pressure;

Various additional objects and advantages 'will become apparent, some being further pointed out, from a consideration of the description following taken in connection with accompanying drawings lllustratlng an operative embodiment.

In said drawings Figure 1 is'a side elevation showing the improvements applied to a bowl;

Figure 2 is an end elevation looking from the right of Figure 1;

Figure 3 is a fragmentary side elevation of the bowl with the end ring and fastening bolts removed;

hopper 11 leading to a barrel or cylinder 12 1 whose axis is horizontally disposed. Within cylinder 12, a usual feed screw and cutter or the equivalent (not shown) and a. perforated plate 13 are removably disposed. Hooks as shown at 14, while not forming part of this invention, serve as one form of means i to attach the bowl to a motor base or casing or other support.

The modification of barrel 12 consists in providing any suitable number of outwardly radiating lugs 15 usually integral therewith at a distance inwardly of the discharge or end of the barrel where plate 13 is located. Lugs 15.1o0sely and detachably carry the shanks of bolts 16 having heads 17 and'on which nuts 18, as of the wing type to facilitatefinger manipulation are provided. The 7 barrel 12 between lugs 15 and the discharge end has a truly cylindrical surface 19.

Describing now the end ring, it is generally designated 20. This ring may be a single metallic casting generally of L-shape in cross-section so asto have a relatively wide annular wall 21 and an inwardly extending flange 22 at its outer marginal edge. Adjacent the inner marginal edge, outwardly extending hook lugs23 are provided equal in number and spaced similarly to" lugs 15. Said lugs 23 are ofconsiderably less thickness than the widthof the end ring ly'or rapidly accomplished.

20 so that the heads 17 will as shown in Figure 1 be located a considerable distance inwardly of the flange or outer end of the ring in ordernot to interfere with manual eigagement or gripping of said ring Lugs 23 have arcuate slots 24 to receive the bolts 16. The wall 21 in line with lugs 23 has exterior depressions 25 which serve as lingernolds and also enable the bolts 16 and lugs 23 to be located'closer to. the center of the end ring, resulting in a more compact construction. The lugs further serve to reinforce wall- 21, particularly where weakest, namely adjacent depressions 25.

I may use a suitable number of relatively small teats 26 on cylinder 12, for instance equidistantly between and of the same numher as lugs 15. The inner surface of wall 21 has shallow l..shaped slots 27. Said tea-ts 26 and slots 27 serve to properly guide end ring 20 in its application to the cylinder and also serve to supplement the action of bolts 16 in resisting longitudinal outward pressure on the end ring.

In use, the end ring is grasped manually with fingers of one hand of the operator disposed in the depressions 25. Said ring is then applied longitudinally onto the wall 19 with slots 27 in registry with and receiving teats 26, after which by rocking motion of the end ring on the surface 19 as a bearing the slots 24: of hook lugs 23 will engage the shanks of bolts 16 and the teats will reach the inner ends of slots 27. Wing nuts 18 are then tightened so that each bolt will apply the same pressure to the end ring. Outward longitudinal thrust against the end ring is counteracted by the teats supplementing the bolts'16. The removal of end ring 20 naturally is theopp'osite to the operation outlined, it being realized that it can be quick- Thus as labor is materially reduced, the user is encouraged to clean'the machine oftener and keep it in a sanitary condition, which while a desideratum in connection with the grinding of meat,

is a well known matter of neglect under present conditions.

Various changes may be resorted to provided they fall within the spirit and scopeof the invention.

I claim as' my'mventionz 1. A comminuting machine having a barrel, an end ring therefor, means exteriorlyend, the barrel having an outer cylindric surface between said lugs and end, a relatively thick end ring telescoped with the barrel and having bearing contact with said surface, lugs extending outwardly beyond the periphery of the ring adjacent the inner end thereof and of less thickness than the ring, means to separably connect the lugs of the barrel and the lugs of the ring together, and said means and lugs being located inwardly of the outer end of the ring a distance sutlicient to enable the periphery of the ring'to be manually grasped without obstructicn by said means and lugs.

3. A comminuting machine having a barrel, fastenings on said barrel, a relatively thick end ring for the barrel having outwardly extendmglugs to separably engage said fastenmgs, said lugs being of less thick ness than the ring, said lugs and fastenings being located inwardly of the outer end surface of the ring to facilitate manual grasping of the periphery of the ring, and said ring at its periphery being provided with gripping means between said outer end and said lugs and fastenings.

4-. A commin-uting machine having a barrel, fastenin'gs on said barrel, an end ring for the barrel having lugs to separably engage said fastenings, said lugs and fastenings being inwardly of the outer surface of the ring to facilitate manual engagement of the side 'wall'of the ring substantially in line with said lugs and fasteningafand said wall along said lines and outwardly of the lugs and fastenings having depressions.

5, A comminuting machine having abarrel provided with. fastenings offset and dis posed longitudinally thereof, the outer surface of the barrel adjacent said fastenings being cylindrical, an end ring having an annular wall in bearing contact with said surface and flange extending inwardly from said wall and overlapping the adjacent end of the barrel, lugs extendingoutwardly from the said annular wall and provided with slots to receive said fastenings, said lugs and fastenings being inwardly of the flange, and the annular wall outwardly of said lugs and fastenings and substantially in line there with having depressions to constitute fingerholds.

6. The matter as claim d in claim 5 in which the end ring is in a single piece. teats extend fromsaid surface, and the end ring has interior substantially L-sha-ped slots to receive said teats.

7. A c'omm'inuting machine having a barrel, an end ring in telescopic engagement with the barrel, c-om'minuting means includ ing a perforated end disk supported at its periphery within the barrel and independently of the end ring, said barrel fhaving lugs inwardly of its discharge end, said ring at its inner end and spaced from its outer end having lugs, and fastenings to secure the lugs of the barrel and the lugs of the ring together.

8. A comminuting machine having a barrel, an end ring in telescopic engagement with the barrel, comminuting means including a perforated end disk supported at its periphery within the barrel andindependently of the end ring, said barrel having a set of at least three lugs inwardly of its discharge end substantially equidistantly spaced apart, said ring having a set of lugs adjacent its inner end similar in number to and to coact with the first mentioned hws, and fastenings carried by one set of lugs etachably engageable by the other set of lugs.

9. A comminuting machine having a barrel, an end ring in telescopic engagement with the barrel, said barrel having a set of at last three lugs inwardly of its discharge end substantially equidistantly spaced apart, said ring having a set of lugs inwardly of its outer end similar in number to the first set of lugs fastening elements detachably carried'by one set of lugs and adjustable longi tudinally of the axis of the barrel, and the other set of lugs being substantially hookshaped to engage said fastenings. I

In testimony whereof I have afiixed my signature.

ELLIOTT GARNS 

